How to Replace Brake Rotors Correctly

An automotive brake system rotor is the rotational part of the brake system that is mounted to the bearing hub or drive axle. Two brake pads are mounted at either side of the rotor which are referred to as inboard and outboard pads. In this guide we will show you the correct way to replace a brake system rotor. Always remember to follow safety precautions and consult your vehicle's service manual for specific instructions.

Tools and Materials Needed

• Jack and jack stands
• Lug wrench
• Socket set and ratchet
• Brake caliper tool or C-clamp
• Torque wrench
• Brake cleaner
• New brake rotors
• New brake pads (optional)
• Gloves and safety glasses

Getting Started

Park your car on level ground with the engine off and in park, lift the car and set it on jack stands for safety and remove the wheels. Your car will look a little different but the procedure is the same, if you need specific form you car instructions please ask one of our experts for help.

1. To begin, remove the brake caliper by undoing the brake caliper mounting clips and bolts, then rock the caliper back and forth to loosen it from the brake rotor.

2. Grasp the brake caliper and lift it from the caliper mount and set it off to the side, do not allow the brake caliper to hang from the brake hose, most mechanics will use zip ties to secure the caliper.

3. Remove the brake pads from the caliper mounting bracket and discard. At this point you are going to want to use new brake pads to compliment the new brake rotor. It is recommended you do not reinstall used brake pads.

4. On some cars the brake rotor will be able to be removed at the this point, but most will require you to remove the caliper mounting bracket which will be held on by two bolts from behind.

5. Now the brake rotor is ready to be removed, grasp the rotor on either side to pull toward you, be sure not to drop the rotor. In some cases the brake rotor will be stuck on the axle flange or bearing hub, please follow this guide to help fix this issue: Brake Rotor Stuck

6. This will expose the brake rotor machined mounting surface which must be cleaned thoroughly by using a wire brush and brake cleaner. This will allow the new brake rotor to be "square" on the axle flange or bearing hub.

7. Match the old brake rotor to the new replacement brake rotor by checking the diameter and thickness, they should match identically. Carefully slide the new brake rotor over the wheel studs and onto the flange surface and reassembly in the reverse order. Be sure to pump the brake pedal slowly until normal brake pressure has returned and you are all set.

Watch the Video!

Please watch this video of the job being done to glean additional helpful information.

Credits

This guide knowledge base was created by the 2CarPros Team, and by Ken Lavacot: Automobile repair shop owner and certified master automobile technician of over 30 years. If you have question or need help please ask one of our experts we are happy to help. Please visit our 2CarPros YouTube Channel.